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Finding the Fourth Proportional to 534.60, 802.71 and 426.06

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Solution

The fourth proportional to 534.60, 802.71 and 426.06 is: 639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.60 : 802.71 = 426.06 : x
  2. Step 2: Convert to fraction form
    534.60/802.71 = 426.06/x
  3. Step 3: Cross multiply
    534.60x = 802.71 × 426.06
  4. Step 4: Simplify right side
    534.60x = 342,002.62
  5. Step 5: Solve for x
    x = 342,002.62/534.60
  6. Step 6: Final answer
    x = 639.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.